Has anyone used the Coleman Yard and Garden Protector? It has a motion sensor that turns on a very high pitched sound that is supposed to scare away critters. Humans can't hear it but raccoons, squirrels, mice etc are supposed to. Do chickens hear it? Do you think it will work? I haven't purchased it yet, not sure it's the right thing to put around my coop. Anybody have any experience with a device of this type?
